EP 2726707 A4 20150805 - SYSTEM AND METHOD FOR AUTOMATIC WEIGHT-ON-BIT SENSOR CALIBRATION
Title (en)
SYSTEM AND METHOD FOR AUTOMATIC WEIGHT-ON-BIT SENSOR CALIBRATION
Title (de)
SYSTEM UND VERFAHREN FÜR AUTOMATISCHE BOHRMEISSELBELASTUNGSSENSORKALIBRIERUNG
Title (fr)
SYSTÈME ET PROCÉDÉ POUR ÉTALONNAGE AUTOMATIQUE D'UN CAPTEUR DE POIDS AU TRÉPAN
Publication
Application
Priority
US 2011042329 W 20110629
Abstract (en)
[origin: WO2013002782A1] A system and method for automatic weight-on-bit sensor calibration is described. Embodiments of the invention automatically compensate the measurements of a weight-on-bit sensor based on one or more of mass, hole inclination, buoyancy, drag, and mud flow, resulting in a more accurate axial force measurement below the weight-on-bit sensor at various hole inclinations. This measurement is observed by removing some of the effects masking the actual force being applied to the axial face of the drill bit.
IPC 8 full level
E21B 47/02 (2006.01); E21B 41/00 (2006.01); E21B 44/00 (2006.01); E21B 47/00 (2012.01); E21B 47/024 (2006.01); G01G 23/01 (2006.01)
CPC (source: EP US)
E21B 41/00 (2013.01 - EP US); E21B 44/00 (2013.01 - EP US); E21B 47/00 (2013.01 - EP US); E21B 47/007 (2020.05 - EP US); E21B 47/024 (2013.01 - EP US); G01G 23/01 (2013.01 - US)
Citation (search report)
- [I] EP 0263644 A2 19880413 - ANADRILL INT SA [PA]
- [I] WO 2010059295 A1 20100527 - EXXONMOBIL UPSTREAM RES CO [US], et al
- See references of WO 2013002782A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013002782 A1 20130103; EP 2726707 A1 20140507; EP 2726707 A4 20150805; EP 2726707 B1 20180221; NO 2726707 T3 20180721; US 2014190747 A1 20140710; US 9512708 B2 20161206
DOCDB simple family (application)
US 2011042329 W 20110629; EP 11868584 A 20110629; NO 11868584 A 20110629; US 201113518769 A 20110629